Obviously I'd not advocate using fake names.  But I'd expect that anyone who used one would be using a different email address to their GLBSE-associated one to ask questions, then mailing from their "proper" email and signing with their real name if they ever actually claimed.  Not quite sure how signing (with a fake name) an email from a disposable email address just to ask some questions could lead to a mess.  Worst that can happen is the lawyer refuses to reply without receiving ID - and that's really not likely: making a demand and refusing to explain it wouldn't exactly strength giga's case if this ever went to court or a regulatory body.

Reason giga's insisting on you contacting his lawyer rather than answeing himself is entirely straight-forward and standard.  You don't buy a guard-dog and then bark yourself.  

I'm sure his lawyer will happily answer each and every email to him - he gets paid for it, so more emails means more money.  Lawyers LOVE exchanging correspondence endlessly (if being paid by a private client) - it's what makes them money. Dunno what rates his charges but expect every email the lawyer even opens costs a fair few $ before he's even clicked the reply button: a minimum charge per item of correspondence received/read is not uncommon.